FI72645C - STRIPMODUL FOER GASSTROEMNING. - Google Patents
STRIPMODUL FOER GASSTROEMNING. Download PDFInfo
- Publication number
- FI72645C FI72645C FI861140A FI861140A FI72645C FI 72645 C FI72645 C FI 72645C FI 861140 A FI861140 A FI 861140A FI 861140 A FI861140 A FI 861140A FI 72645 C FI72645 C FI 72645C
- Authority
- FI
- Finland
- Prior art keywords
- choke
- hose
- stripmodul
- gas
- gasstroemning
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/083—Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Biophysics (AREA)
- Biochemistry (AREA)
- Medicinal Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Obesity (AREA)
- Physiology (AREA)
- Pulmonology (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Sampling And Sample Adjustment (AREA)
- Measuring Volume Flow (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Description
1 726451 72645
Kaasunvirtauskuristinmoduli - Strypmodul för gasströmning.Gas flow choke module - Stripmodul för gasströmning.
Keksinnön kohteena on kaasunvirtauskuristinmoduli, jota käytetään lääketieteellisen hengityskaasuanalysaattorin kaasun-käsittelyjärjestelmässä virtauksen kuristamiseen, jakamiseen ja säätöön.The invention relates to a gas flow choke module used in a gas treatment system of a medical breath gas analyzer for throttling, splitting and regulating the flow.
Potilasvalvonnassa käytetään yleisesti hengityskaasujen pitoisuuksien monitorointiin kaasuanalysaattoria. Ns. sivuvirtaus-monitorissa analysoitavasta kaasusta johdetaan näyte potilaan hengitystiestä tai hengitysletkustosta kaasumonitorin sisään analyysia varten. Koska kaasun mukana usein seuraa vettä, limaa ja pölyä, on näytteenottojärjestelmän ensinnäkin kyettävä erottamaan merkittävä osa näistä mittausantureille erittäin haitallisista aineista, ja toiseksi laitteen on tukkeutumatta siedettävä mahdollisimman paljon näitä aineita.A gas analyzer is commonly used in patient monitoring to monitor respiratory gas concentrations. In the so-called side flow monitor, a sample of the gas to be analyzed is fed into the patient's airway or respiratory tubing inside the gas monitor for analysis. As water, mucus and dust often accompany the gas, the sampling system must first be able to separate a significant proportion of these substances, which are very harmful to the measuring sensors, and secondly, the device must tolerate as much of these substances as possible without clogging.
Kaasun virtauskuristus on oleellinen osa sekä näytevirtauksen säätömekanismia että vedenerotinjärjestelmää (vrt. esim. US-patenttijulkaisuissa 4 382 806 ja 4 304 578 esitetty vedenerotinjärjestelmä).Gas flow restrictor is an integral part of both the sample flow control mechanism and the water separator system (cf. e.g., the water separator system disclosed in U.S. Patent Nos. 4,382,806 and 4,304,578).
Kaasuvirtauksen rajoittamisen lisäksi virtauskuristukselta edellytetään useita ominaisuuksia: - kuristus ei saa olla niin "pienireikäinen", että se tukkeutuu pölyhiukkasista.In addition to restricting the gas flow, several characteristics are required for the flow restrictor: - the restrictor must not be so "small-hole" that it is clogged with dust particles.
- Kuristimen on siedettävä hetkellinen vedellä täyttyminen, esim. pesun, desinfioinnin tai vedenerottimen ylikuormituksen aikana. Vesi on myös voitava helposti poistaa kuristimesta.- The choke must be able to withstand momentary filling with water, eg during washing, disinfection or overloading of the water separator. It must also be possible to easily remove water from the choke.
Nämä vaatimukset täyttyvät usein parhaiten pitkällä, ohuella, liukkaasta muovista tehdyllä letkulla. Tällaisella letkutyyp-pisellä kuristuksella on kuitenkin useita haittapuolia kuten mekaaninen haavoittuvuus, hankala asennus, se on vaikea liittää muihin, eri paksuisiin letkuihin, eikä liukkaita muovilaatuja (esim. teflon tai polyeteeni) ole helppo liimata.These requirements are often best met with a long, thin, slippery plastic hose. However, this type of hose-type choke has several disadvantages such as mechanical vulnerability, cumbersome installation, difficulty in connecting to other hoses of different thicknesses, and slippery plastic grades (e.g., Teflon or polyethylene) that are not easy to glue.
j 72645j 72645
Seuraus näistä ongelmista on huono tuotettavuus.The result of these problems is poor productivity.
Keksinnön tarkoituksena on aikaansaada parannettu kaasunvir-tauskuristinmoduli, jossa on voitu osittain tai kokonaan välttää edellä mainitut, letkutyyppisen kuristuksen valmistukseen ja käyttöön liittyvät ongelmat.The object of the invention is to provide an improved gas flow choke module in which it has been possible to partially or completely avoid the above-mentioned problems associated with the manufacture and use of a hose-type throttle.
Tämä tarkoitus saavutetaan keksinnöllä oheisissa patenttivaatimuksissa esitettyjen tunnusmerkkien perusteella.This object is achieved by the invention on the basis of the features set out in the appended claims.
Seuraavassa keksinnön erästä suoritusesimerkkiä havainnollistetaan viittaamalla oheisiin piirustuksiin, joissa kuvio 1 esittää keksinnön mukaisen kuristinmodulin yleisrakennetta päältä nähtynä ja halkileikkauksena.In the following, an embodiment of the invention will be illustrated with reference to the accompanying drawings, in which Figure 1 shows the general structure of a choke module according to the invention seen from above and in cross section.
Kuvio 2 esittä kuristinmodulin yksityiskohtaa leikkauksena letkuliitoksen kohdalta.Figure 2 shows a detail of the choke module in section at the hose connection.
Kuvio 3 esittää samaa yksityiskohtaa kun ulkoinen letku on liitetty letkuliitokseen.Figure 3 shows the same detail when the external hose is connected to the hose connection.
Kuvio 4 esittää kuristinmodulien mekaanista asennusta hengityskaasumonitorointilaitteeseen.Figure 4 shows the mechanical installation of the choke modules in the breathing gas monitoring device.
Kuristinmoduli koostuu kolmesta pääosasta: - valettu muovinen kelarunko 2 (ja kansi 2a) - runkoon kelattu kuristusletku 3 - letkuliittimet 5, joihin kuristusletku 3 valetaan.The choke module consists of three main parts: - a molded plastic coil body 2 (and a cover 2a) - a choke hose 3 wound on the body - hose connectors 5 into which the choke hose 3 is cast.
Kun letku 3 on kelattu kelarunkoon 3 ja letkun 3 päät työnnetty ulos liittimistä 5, valetaan letkun 3 ympärille viitenumerolla 4 merkitty epoksiliimavalu tai muu vastaava liimavalu, jonka sisään letku 3 jää ainakin liittimien 5 alueella, mutta sopivimmin myös kelarungon 2 alueella.When the hose 3 is wound on the reel body 3 and the ends of the hose 3 are pushed out of the connectors 5, an epoxy molding or other similar adhesive molding marked with reference number 4 is cast around the hose 3, inside which the hose 3 remains at least
Erittäin oleellinen osa keksintöä on juuri letkuliitokset 5.A very essential part of the invention is precisely the hose connections 5.
72645 372645 3
Koska letku 3 on liitoksissa 5 ja osittain tai kokonaan kela-rungon 2 alueella valettu epoksiliimaan 4, ei itse kuristus-letkun 3 tarvitse olla liimautuvaa materiaalia; liitoksen 5 tiiveys ei valun ansiosta edellytä tarttumista.Since the hose 3 is cast in the joints 5 and partially or completely in the area of the coil body 2 in an epoxy adhesive 4, the throttle hose 3 itself does not have to be an adhesive material; the tightness of the joint 5 does not require adhesion due to the casting.
Valun jälkeen liitoksesta 5 yli ulottuva kuristusletkun 3 pää katkaistaan.After casting, the end of the choke hose 3 extending beyond the joint 5 is cut off.
Kuten kuviossa 3 on esitetty, voidaan keksinnön mukainen ku-ristinmoduli liittää monitorointilaitteen muuhun letkustoon paksulla ja joustavalla, esim. silikoniletkulla 6 suoraan ilman että joustava letku 6 puristaisi kuristusletkun umpeen.As shown in Fig. 3, the choke module according to the invention can be connected to the rest of the monitoring device directly with a thick and flexible, e.g. silicone hose 6, without the flexible hose 6 compressing the throttling hose.
Kuristinmodulin litteä sylinterimäinen muoto tekee mahdolliseksi useiden kuristinmodulien mekaanisen päällekkäinasentami-sen kuten kuviossa 4 on näytetty. Kennorakenne takaa siis helpon asennettavuuden kaasumonitorin sisälle.The flat cylindrical shape of the choke module makes it possible to mechanically superimpose several choke modules as shown in Fig. 4. The cell structure thus ensures easy installation inside the gas monitor.
Keksinnön muita etuja pelkkien soviteletkujen avulla rakennettuun, tukemattomaan kuristusletkurakenteeseen nähden ovat: - arka kuristusletku on hyvin suojattu eikä ole altis taittumiselle eikä kolhuille - kuristusletkun voi valaa kokonaan epoksi- tms. liimaan, jolloin mekaaninen stabiilisuus on hyvä. Virtausvastushan on verrannollinen letkun halkaisijan neljänteen potenssiin, ja siis herkkä mekaanisten ja termisten rasitusten aiheuttamalle deformaatiolle.Other advantages of the invention over an unsupported choke hose structure built by means of adapter hoses alone are: - the delicate choke hose is well protected and not prone to bending or knocks - the choke hose can be cast entirely in epoxy or glue, whereby mechanical stability is good. After all, the flow resistance is proportional to the fourth power of the hose diameter, and thus sensitive to deformation caused by mechanical and thermal stresses.
Claims (3)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI861140A FI72645C (en) | 1986-03-19 | 1986-03-19 | STRIPMODUL FOER GASSTROEMNING. |
DE19873702279 DE3702279A1 (en) | 1986-03-19 | 1987-01-27 | MODULE WITH NARROW TUBE |
US07/014,012 US4798229A (en) | 1986-03-19 | 1987-02-12 | Gas flow constriction module |
GB8705286A GB2188169B (en) | 1986-03-19 | 1987-03-06 | Gas flow constriction module |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI861140A FI72645C (en) | 1986-03-19 | 1986-03-19 | STRIPMODUL FOER GASSTROEMNING. |
FI861140 | 1986-03-19 |
Publications (3)
Publication Number | Publication Date |
---|---|
FI861140A0 FI861140A0 (en) | 1986-03-19 |
FI72645B FI72645B (en) | 1987-03-31 |
FI72645C true FI72645C (en) | 1987-07-10 |
Family
ID=8522317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI861140A FI72645C (en) | 1986-03-19 | 1986-03-19 | STRIPMODUL FOER GASSTROEMNING. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4798229A (en) |
DE (1) | DE3702279A1 (en) |
FI (1) | FI72645C (en) |
GB (1) | GB2188169B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5368021A (en) * | 1992-04-09 | 1994-11-29 | Criticare Systems, Inc. | System for handling and monitoring respiratory waste streams |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2393854A (en) * | 1942-01-31 | 1946-01-29 | Elizabeth C Carpenter | Feed control for liquid refrigerant |
US3346117A (en) * | 1965-06-09 | 1967-10-10 | Texaco Inc | De-emulsifying apparatus |
DE2012450C3 (en) * | 1970-03-16 | 1979-04-26 | Jaeger, Erich, 8700 Wuerzburg | Medical device for registering two measured variables, one of which is obtained by analyzing the air you breathe |
US3826288A (en) * | 1973-04-20 | 1974-07-30 | Dayco Corp | Self-recoiling hose |
US4197857A (en) * | 1978-04-06 | 1980-04-15 | Research Development Corporation | System for measurement of oxygen uptake and respiratory quotient |
US4167667A (en) * | 1978-06-12 | 1979-09-11 | The Perkin-Elmer Corporation | Respiratory gas moisture separator system for mass spectrometer monitoring systems |
GB2029959B (en) * | 1978-09-01 | 1983-06-15 | Instrumentarium Oy | Water separator for gas analyzer |
US4276333A (en) * | 1979-10-22 | 1981-06-30 | Baxter Travenol Laboratories, Inc. | Apparatus and method for solvent adhesion of coiled tubing, and product produced thereby |
DE3320632A1 (en) * | 1983-06-08 | 1984-12-13 | Hoechst Ag, 6230 Frankfurt | HEAT EXCHANGER |
GB8334078D0 (en) * | 1983-12-21 | 1984-02-01 | Laporte Industries Ltd | Heat exchanger |
-
1986
- 1986-03-19 FI FI861140A patent/FI72645C/en not_active IP Right Cessation
-
1987
- 1987-01-27 DE DE19873702279 patent/DE3702279A1/en not_active Ceased
- 1987-02-12 US US07/014,012 patent/US4798229A/en not_active Expired - Lifetime
- 1987-03-06 GB GB8705286A patent/GB2188169B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US4798229A (en) | 1989-01-17 |
DE3702279A1 (en) | 1987-09-24 |
FI72645B (en) | 1987-03-31 |
GB2188169A (en) | 1987-09-23 |
FI861140A0 (en) | 1986-03-19 |
GB8705286D0 (en) | 1987-04-08 |
GB2188169B (en) | 1989-11-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed |
Owner name: INSTRUMENTARIUM OY |